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-rw-r--r--src/tsort.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/tsort.c b/src/tsort.c
index b863cfce6..3cf94799e 100644
--- a/src/tsort.c
+++ b/src/tsort.c
@@ -34,6 +34,9 @@
#include "error.h"
#include "readtokens.h"
+/* The official name of this program (e.g., no `g' prefix). */
+#define PROGRAM_NAME "tsort"
+
/* Token delimiters when reading from a file. */
#define DELIM " \t\n"